In an image processing device composed such that it can display a
prescribed object whilst changing the shape of the object. Furthermore,
the image processing device includes a first memory for recording
information for first polygons which form the object; a second memory for
recording information for second polygons that form the object and are
linked to the first polygons; and when the shape of the object is changed,
the shapes of the second polygons are changed such that no gaps are
produced between the first polygons and the second polygons. Using
computer graphics in a video game it is possible to achieve a more
realistic object representation, wherein joint regions move in a natural
manner.